Granted Patent
Utility
US 4,325,591 · App. 06/190,513
Sealed and unitized bearing
Inventor:
Dennis L. Otto
Patented Case
View Patent ↗
Granted: Apr 20, 1982
Filed: Sep 25, 1980
Inventor
Dennis L. Otto
Assignee (at issue)
THE TIMKEN COMPANY
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.